目的探讨富含亮氨酸重复序列/Ⅲ型纤维连接蛋白4(leucine-rich repeat and fibronectin typeⅢdomain-containing protein 4,LRFN4)在胃癌组织中的表达情况,并分析LRFN4表达水平与胃癌患者临床病理参数和预后的关系。方法收集2017年1月...目的探讨富含亮氨酸重复序列/Ⅲ型纤维连接蛋白4(leucine-rich repeat and fibronectin typeⅢdomain-containing protein 4,LRFN4)在胃癌组织中的表达情况,并分析LRFN4表达水平与胃癌患者临床病理参数和预后的关系。方法收集2017年1月至12月于中山大学附属第一医院胃肠外科中心确诊并行手术治疗的胃癌患者组织标本8对(包含胃癌组织和癌旁正常组织),并选取2004年1月至2005年12月在同一中心行手术治疗的117例胃癌患者的术后组织标本制成胃癌组织芯片。分析LRFN4在癌症基因组图谱(the cancer genome atlas,TCGA)数据库胃癌数据集中的表达情况,应用蛋白质印迹法及实时荧光定量聚合酶链反应检测LRFN4在8对新鲜胃癌组织及癌旁正常组织中的表达,应用免疫组织化学检测LRFN4在胃癌组织芯片中的表达。分析不同LRFN4表达水平的胃癌患者其临床病理参数的差异。应用Kaplan-Meier法分析不同LRFN4表达水平的胃癌患者的预后情况。应用单因素和多因素Cox回归分析法分析胃癌患者预后的影响因素。结果LRFN4在TCGA数据库胃癌数据集的胃癌组织以及新鲜胃癌组织中呈高表达状态。LRFN4高表达的患者,表现出更大的肿瘤大小以及更为进展的T分期、N分期、M分期和TNM分期(均P<0.05),其预后也较差(P<0.001)。单因素和多因素Cox回归分析提示LRFN4在胃癌组织中的高表达是影响胃癌患者预后的独立危险因素(HR=3.898,95%CI 2.273~6.686,P<0.001)。结论胃癌组织中LRFN4高表达与患者较差的预后相关,可能成为预测胃癌患者预后的生物标志物之一。展开更多
首先给出了May谱序列E_1^(s,t,u)项的几个结果,然后利用这些结果和关于Ext_P^(s,t)(Z_p,Z_p)的一个估计(P为由mod p Steenrod代数A的所有循环缩减幂P^i(i≥0)生成的子代数)得出了乘积(?)t (?)g0∈Ext_A^(*,*)(Z_p,Z_p)(3≤t<p-2)在Ad...首先给出了May谱序列E_1^(s,t,u)项的几个结果,然后利用这些结果和关于Ext_P^(s,t)(Z_p,Z_p)的一个估计(P为由mod p Steenrod代数A的所有循环缩减幂P^i(i≥0)生成的子代数)得出了乘积(?)t (?)g0∈Ext_A^(*,*)(Z_p,Z_p)(3≤t<p-2)在Adams谱序列的收敛性。其中g0∈Ext_A^(2,pq+2q)(Z_p,Z_p),(?)∈Ext_A^(3,p^2q+2pq)(Z_p,Z_p).展开更多
AIM： To investigate the effect of Qinggan Huoxuefang （QGHXF） on improvement of liver function and pathology in rats, and to analyze the mechanism. METHODS： Wistar rats were divided into three groups at random： no...AIM： To investigate the effect of Qinggan Huoxuefang （QGHXF） on improvement of liver function and pathology in rats, and to analyze the mechanism. METHODS： Wistar rats were divided into three groups at random： normal control group （12）, micro-amount carbon tetrachlodde group （CCh）（12） and model group A （60）. The model group A was ingested with the mixture （500 mL/L alcohol, 8 mL/kg per day; corn oil, 2 mL/kg per day; pyrazole, 24 mg/kg per day） once a day and intraperitoneal injections of 0.25 mL/kg of a 250 mL/L solution of CCh in olive oil twice a week for 12 wk. The CCh group received intraperitoneal injections only. At the end of 8 wk the model group A （60） was divided into 5 subgroups： model group, Xiaochaihu Chongji （XCH） group, QGHXF high dose group, moderate dose group and low dose group, and were given the drugs respectively. At the end of 12 wk, all the rats were killed and blood samples collected, as well as liver tissue. Blood samples were used for evaluation of alanine transaminase （ALT）, aspartate aminotransferase （AST）, alkaline phosphatase （ALP）, gamma-glutamyltransferase （y-GT）. Liver specimens were obtained for routine HE, apoptosis gene array and flow cytometry analysis. RESULTS： A liver fibrosis animal model was successfully established. Fibrosis was obviously reduced in QGHXF high dose group, and no fibrosis formed in CCh group. Compared with model group the QGHXF group and XCH group could obviously decrease the level of ALT, AST, ALP, and GGT （P〈0.05）. QGHXF high dose group was better than XCH group in ALT （615± 190 vs 867± 115）,and AST（1972 ± 366 vs 2777 ± 608）. Moreover, QGHXF could reduce liver inflammation, fibrosis-induced hepatic stellate cell （HSC） apoptosis and regulate apoptosis gene expression. The HSC apoptosis rates of QGHXF groups were 22.4±3.13, 13.79±2.26 and 10.07± 1.14, higher than model group, 6.58±1.04 （P〈 0.05）. Compared to model group, 39 genes were up-regulated, 11 solely expressed and 17 down-regulated in high dose group. CONCLUSION： QGHXF can improve liver fibrosis and induce HSC apoptosis.展开更多
In this study, we investigated the genes related to the transformation of immortalized human fetal tracheal fibroblast cell line induced by alpha particles by means of differential display mRNA method. The result reve...In this study, we investigated the genes related to the transformation of immortalized human fetal tracheal fibroblast cell line induced by alpha particles by means of differential display mRNA method. The result revealed that there were 23 DNA fragments that were expressed intensively in alphaSHTF cells (SHTF cells forming clone on agar after irradiated by alpha particles emitted by 238Pu) only and not in SHTF (SV40-immortalized human fetal tracheal fibroblast) cells. Northern dot confirmed two fragments, C17-5, C23-1 which showed intensive mRNA expression in alphaSHTF cells, but not in SHTF cells. The length of the C17-5 fragment was 310bp. Searching in BLAST database revealed that the C17-5 fragment might be an unknown sequence.展开更多
文摘目的探讨富含亮氨酸重复序列/Ⅲ型纤维连接蛋白4(leucine-rich repeat and fibronectin typeⅢdomain-containing protein 4,LRFN4)在胃癌组织中的表达情况,并分析LRFN4表达水平与胃癌患者临床病理参数和预后的关系。方法收集2017年1月至12月于中山大学附属第一医院胃肠外科中心确诊并行手术治疗的胃癌患者组织标本8对(包含胃癌组织和癌旁正常组织),并选取2004年1月至2005年12月在同一中心行手术治疗的117例胃癌患者的术后组织标本制成胃癌组织芯片。分析LRFN4在癌症基因组图谱(the cancer genome atlas,TCGA)数据库胃癌数据集中的表达情况,应用蛋白质印迹法及实时荧光定量聚合酶链反应检测LRFN4在8对新鲜胃癌组织及癌旁正常组织中的表达,应用免疫组织化学检测LRFN4在胃癌组织芯片中的表达。分析不同LRFN4表达水平的胃癌患者其临床病理参数的差异。应用Kaplan-Meier法分析不同LRFN4表达水平的胃癌患者的预后情况。应用单因素和多因素Cox回归分析法分析胃癌患者预后的影响因素。结果LRFN4在TCGA数据库胃癌数据集的胃癌组织以及新鲜胃癌组织中呈高表达状态。LRFN4高表达的患者,表现出更大的肿瘤大小以及更为进展的T分期、N分期、M分期和TNM分期(均P<0.05),其预后也较差(P<0.001)。单因素和多因素Cox回归分析提示LRFN4在胃癌组织中的高表达是影响胃癌患者预后的独立危险因素(HR=3.898,95%CI 2.273~6.686,P<0.001)。结论胃癌组织中LRFN4高表达与患者较差的预后相关,可能成为预测胃癌患者预后的生物标志物之一。
文摘首先给出了May谱序列E_1^(s,t,u)项的几个结果,然后利用这些结果和关于Ext_P^(s,t)(Z_p,Z_p)的一个估计(P为由mod p Steenrod代数A的所有循环缩减幂P^i(i≥0)生成的子代数)得出了乘积(?)t (?)g0∈Ext_A^(*,*)(Z_p,Z_p)(3≤t<p-2)在Adams谱序列的收敛性。其中g0∈Ext_A^(2,pq+2q)(Z_p,Z_p),(?)∈Ext_A^(3,p^2q+2pq)(Z_p,Z_p).
基金Supported by Shanghai Rising-Star program, No. 03QMH1410
文摘AIM： To investigate the effect of Qinggan Huoxuefang （QGHXF） on improvement of liver function and pathology in rats, and to analyze the mechanism. METHODS： Wistar rats were divided into three groups at random： normal control group （12）, micro-amount carbon tetrachlodde group （CCh）（12） and model group A （60）. The model group A was ingested with the mixture （500 mL/L alcohol, 8 mL/kg per day; corn oil, 2 mL/kg per day; pyrazole, 24 mg/kg per day） once a day and intraperitoneal injections of 0.25 mL/kg of a 250 mL/L solution of CCh in olive oil twice a week for 12 wk. The CCh group received intraperitoneal injections only. At the end of 8 wk the model group A （60） was divided into 5 subgroups： model group, Xiaochaihu Chongji （XCH） group, QGHXF high dose group, moderate dose group and low dose group, and were given the drugs respectively. At the end of 12 wk, all the rats were killed and blood samples collected, as well as liver tissue. Blood samples were used for evaluation of alanine transaminase （ALT）, aspartate aminotransferase （AST）, alkaline phosphatase （ALP）, gamma-glutamyltransferase （y-GT）. Liver specimens were obtained for routine HE, apoptosis gene array and flow cytometry analysis. RESULTS： A liver fibrosis animal model was successfully established. Fibrosis was obviously reduced in QGHXF high dose group, and no fibrosis formed in CCh group. Compared with model group the QGHXF group and XCH group could obviously decrease the level of ALT, AST, ALP, and GGT （P〈0.05）. QGHXF high dose group was better than XCH group in ALT （615± 190 vs 867± 115）,and AST（1972 ± 366 vs 2777 ± 608）. Moreover, QGHXF could reduce liver inflammation, fibrosis-induced hepatic stellate cell （HSC） apoptosis and regulate apoptosis gene expression. The HSC apoptosis rates of QGHXF groups were 22.4±3.13, 13.79±2.26 and 10.07± 1.14, higher than model group, 6.58±1.04 （P〈 0.05）. Compared to model group, 39 genes were up-regulated, 11 solely expressed and 17 down-regulated in high dose group. CONCLUSION： QGHXF can improve liver fibrosis and induce HSC apoptosis.
文摘In this study, we investigated the genes related to the transformation of immortalized human fetal tracheal fibroblast cell line induced by alpha particles by means of differential display mRNA method. The result revealed that there were 23 DNA fragments that were expressed intensively in alphaSHTF cells (SHTF cells forming clone on agar after irradiated by alpha particles emitted by 238Pu) only and not in SHTF (SV40-immortalized human fetal tracheal fibroblast) cells. Northern dot confirmed two fragments, C17-5, C23-1 which showed intensive mRNA expression in alphaSHTF cells, but not in SHTF cells. The length of the C17-5 fragment was 310bp. Searching in BLAST database revealed that the C17-5 fragment might be an unknown sequence.
